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Finding the Fourth Proportional to 19,891.99, 27,451.65 and 10,940.18

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Solution

The fourth proportional to 19,891.99, 27,451.65 and 10,940.18 is: 15,097.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,891.99 : 27,451.65 = 10,940.18 : x
  2. Step 2: Convert to fraction form
    19,891.99/27,451.65 = 10,940.18/x
  3. Step 3: Cross multiply
    19,891.99x = 27,451.65 × 10,940.18
  4. Step 4: Simplify right side
    19,891.99x = 300,325,992.30
  5. Step 5: Solve for x
    x = 300,325,992.30/19,891.99
  6. Step 6: Final answer
    x = 15,097.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.